19137+0218 HJ  879 (21 Aql)

 
 
19h 13m 42.70s +02 17' 37.4" P.A. 287 sep 36.9 mag 5.15,12.30 Sp B8II-III
 
 
Coord 2000
19137+0218
Discov num
HJ  879
Comp
Coord arcsec 2000
19 13 42.70 +02 17 37.4
Date first
1827
Date last
2010
Obs
8
Pa first
295
Pa last
287
P.A. Now (θ)
287°
Sep first
25.0
Sep last
36.9
Sep. Now (ρ)
36.9"
Mag pri
5.15
Mag sec
12.30
delta mag (ΔM)
7.15
Spectral class
B8II-III (blue-white)
Pri motion ra
+007
Sec motion ra
Pri motion dec
-003
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
286.8
Precise sep
36.91
Name
21 Aql
Constellation
Aquila
SAO
124408
HD
179761
HR
7287
Flamsteed
21 Aquilae
Flamsteed name
21 Aql
last precise pa
286.8
last precise sep
36.91
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19137+0218 HJ 879 1999 4 287 36.8 5.15 12.30 B8II-III N D 191342.70+021737.4
19137+0218 HJ 879 2006 5 289 36.7 5.15 12.30 B8II-III N D 191342.70+021737.4
19137+0218 HJ 879 2010 8 287 37.0 5.15 12.30 B8II-III N 191342.70+021737.4

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